I will only quit if I get millionaire with BTC.

First be a millionaire, then act like a millionaire

If I get sufficient income from bitcoinI would. Else being a millionare yes I would lose my job and go into some 100% bitcoin venture capitalist.
However right now i would never do it, since it's too insecure.

Personally, I wouldn't do it. I just can't imagine myself going 'all in' on Bitcoins or any other e-coins for that matter. Having a job means, hopefully, your getting a steady income every single month, which means you will have the ability to live a life. It would be to risky investing all of your money in just a single asset - you have to spread your risk, investing i fiat, gold, stocks or bonds would also be beneficial if you want to make a living out of investing your money.

fluctuation is not a problem, if you are working to get bitcoin, you have to be smart to handle this, you can directly convert it into a fiat currency when you earn bitcoin, fluctuation is not a problem

I will never do a full time on bitcoin is not that safe with my daily life.
I will just do it for a hobby and is just playing with it full time not for me.

I doubt it but maybe someday I will.

I might be able to do this someday. A bit too much of a risk to do this today though.
I can't wait for this to actually see happening, I'm pretty excited for the future of bitcoin.

Fluctuation is problem when it makes the price very unstable so one day its price is 250$ and after some months it becomes 450$ and you cannot predict what happens in future.

For those who are unable to work due to physical sickness, disabled, hard to found job in their location etc. having full time in bitcoin really fits to them. All they have is a personal computer or laptops (even phone will do but much better if you have all) and a stable internet connection. Even the earnings are not that high compare to their real life jobs, it's better than nothing and to sleep all day long.